The physical aspects of traditional radiology and of computed radiology compared
Abstract
In the last decade a new radiographic technique has been establishing itself which makes the most of technological progress in the fields of laser optics, of materials and of computer science and integrates conventional techniques introducing the digital image also into radiographic diagnosis. The authors, who have gained a wide experience in both the theory and the applications of Computed Radiography (CR), carefully reviewed Italian literature and found no review article on technical theoretical principles, while many such papers are found in international literature. Therefore, they took the lead for a review paper on this subject. For easier reading, the paper was divided into three parts: the first one is the necessary introduction to the physical parameters to understand radiographic images, i.e., the signal-to-noise ratio, the modulation transfer function, the Wiener spectrum and the detective quantum efficiency. The second part deals with the physical features of the formation of conventional radiographic images: the latest notions about the conversion of X-ray energy into light photons by intensifying screen phosphors are here reported. Finally, radiographic image readability is related to the characteristics of the screen-film system. The third part of the paper deals with CR, in particular with the problems related to image acquisition through the screens called imaging plates, to the laser reading technique and to image reconstruction. Finally, the different…
Read the paper
Related studies
- Developing high safety Li-metal anodes for future high-energy Li-metal batteries: strategies and perspectives
- Structure and Energy Transfer in Photosystems of Oxygenic Photosynthesis
- Ground- and Space-Based Gamma-Ray Astronomy
- Energy Functions in De Novo Protein Design: Current Challenges and Future Prospects
- Electronic structure of ions and molecules in solution: a view from modern soft X-ray spectroscopies
- Arising 2D Perovskites for Ionizing Radiation Detection
Go deeper in Evidence Hub
Evidence Hub adds a study data sheet (design, sample size, evidence level, key numbers), an AI summary and a chat grounded in the paper's text.